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dts: bindings: rtc: stm32-rtc: add alrm-exti-line property

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Gives number of the Extended Interrupts and Event Controller (EXTI)
interrupt line connected to the RTC Alarm event.
Used on all series, except WBAX & U5X, where RTC Alarm interrupt is
routed directly to Nested Vectored Interrupt Controller (NVIC) and to
Power Control (PWR) wake-up pins.

Signed-off-by: Abderrahmane Jarmouni <abderrahmane.jarmouni-ext@st.com>
This commit is contained in:
Abderrahmane Jarmouni 2024-05-02 09:37:35 +02:00 • committed by Carles Cufí
commit e2bd33bf6c
1 changed files with 10 additions and 0 deletions
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10
dts/bindings/rtc/st,stm32-rtc.yaml
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@ -27,3 +27,13 @@ properties:
Number of alarms supported by STM32 RTC device.
Most of STM32 MCU series have 2 RTC alarms, A & B.
Defaults to 0 when not declared in devicetree.
alrm-exti-line:
type: int
description: |
Number of the Extended Interrupts and Event Controller (EXTI) interrupt
line connected to the RTC Alarm event.
Not required, since RTC Alarm interrupt could be routed directly to Nested
Vectored Interrupt Controller (NVIC) and to Power Control (PWR) wake-up
pins on some series.
Valid range: 0 - 31